From: Alexandra Yates <alexandra.yates@linux.intel.com>
Date: Wed, 18 Nov 2015 22:58:40 +0000 (-0800)
Subject: intel_pstate: Fix "performance" mode behavior with HWP enabled
X-Git-Tag: v4.4-rc3~14^2~1
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=584ee3dcb1d6232857c1e38bb28d9f6bf0ec89f5;p=uclinux-h8%2Flinux.git

intel_pstate: Fix "performance" mode behavior with HWP enabled

If hardware-driven P-state selection (HWP) is enabled, the
"performance" mode of intel_pstate should only allow the processor
to use the highest-performance P-state available.  That is not
the case currently, so make it actually happen.

Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
[ rjw: Subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 8ad1f958ffe4..4d07cbd2b23c 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1101,6 +1101,8 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 	    policy->max >= policy->cpuinfo.max_freq) {
 		pr_debug("intel_pstate: set performance\n");
 		limits = &performance_limits;
+		if (hwp_active)
+			intel_pstate_hwp_set();
 		return 0;
 	}